Title (fr)

Publication

Application

Priority

DE 19900002 A 19990101

Abstract (en)

The method is carried out with a system, so that the protective gas (7) in the flow direction of a nozzle duct of a nozzle (5) as a coaxial jet arranged coaxially to the laser beam (3), is guided with comparatively high flow speed for the protection of the optic (6), arranged in the laser material processing head. The protective gas is guided with reduced flow speed against the surface of the workpiece (9), to act as a shield during the welding process.